#app{
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: #f5f5f5;
}

#app .title{
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
}